C5 X7 Diagbox- where to find the alternator?

This is the place for all your Diagnostic related questions or advice.

Moderator: RichardW

Post Reply
marsalek
Posts: 144
Joined: 21 May 2003, 16:37
Location: Germany
My Cars: Xantia X2 HDi109
C5 X7 HDi240
x 14

C5 X7 Diagbox- where to find the alternator?

Post by marsalek »

Dear colleagues,

could please someone advise me, where do I need to go in Diagbox to change the type of alternator on my C5 X7?

I am quite a newbie in terms of Diagbox. Lexia on my XantiaMk2 was a bit easier ;-)

Thanks a lot!
Karel
User avatar
GiveMeABreak
Forum Admin Team
Posts: 36996
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5644

Re: C5 X7 Diagbox- where to find the alternator?

Post by GiveMeABreak »

There is nothing to configure Karel - it is not required. There are only 2 settings - one is for a Petrol type engine and the other is for Diesels - so you would already have the correct setting for your 3.0 HDi.
Please Don't PM Me For Technical Help

Marc
marsalek
Posts: 144
Joined: 21 May 2003, 16:37
Location: Germany
My Cars: Xantia X2 HDi109
C5 X7 HDi240
x 14

Re: C5 X7 Diagbox- where to find the alternator?

Post by marsalek »

Hi Marc, thanks for your reply! IIRC, I saw something like regulated / non-regulated alternator somewhere and cannot find the place any more.

Do I normally go to Global test and then continue to a specific system, where I can configure stuff, or do I choose another first-level menu in DiagBox?

Thanks a lot!
Karel
User avatar
GiveMeABreak
Forum Admin Team
Posts: 36996
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5644

Re: C5 X7 Diagbox- where to find the alternator?

Post by GiveMeABreak »

No - you don't change it Karel - the option is ALWAYS Controlled for petrol and Standard for Diesel - don't change the setting. As I said, you would already have the correct one programmed in - changing it may cause you grief....

Diesels need more power to start than petrols, so use up more power and need replenishing more quickly.
Please Don't PM Me For Technical Help

Marc
marsalek
Posts: 144
Joined: 21 May 2003, 16:37
Location: Germany
My Cars: Xantia X2 HDi109
C5 X7 HDi240
x 14

Re: C5 X7 Diagbox- where to find the alternator?

Post by marsalek »

Well, if Standard is the one, which charges the batery more, then I am fine with that.

I am unhappy about, how the battery is treated in my car. The voltage (measured in my cigarette lighter socket) reads about 13.8 V with engine running. It used to increase, when I was decelerating, but in the last couple of months the voltage does not rise above 14.0 V any more. Maybe it is because the charge level is high (90% just now). From time to time I recharge the battery by an external charger, when I park at home.

So I thought I can tweak it with the alternator setting, but I see, there is no room for improvement. Fu...ng EURO5.

Regards and thanks again for the help!
Karel
User avatar
GiveMeABreak
Forum Admin Team
Posts: 36996
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5644

Re: C5 X7 Diagbox- where to find the alternator?

Post by GiveMeABreak »

Yes, no settings Karel. But 14.3 to 14.7 is what you typically will have at idle - measure with a multimeter across the battery terminals is best. If a lot less than this, how old is the battery? You have a 3.0 HDi so the battery will be on the larger size - but if older than 5 years it won't be running as well as a new one and my have reduced capacity. A newer Smart charger will be able to do a full recondition de-sulpherisation stage and charge for you if you aren't using it at the present time during lockdown.

I have one of these:

viewtopic.php?p=635703#p635703
Please Don't PM Me For Technical Help

Marc
marsalek
Posts: 144
Joined: 21 May 2003, 16:37
Location: Germany
My Cars: Xantia X2 HDi109
C5 X7 HDi240
x 14

Re: C5 X7 Diagbox- where to find the alternator?

Post by marsalek »

You probably meant 13.3 to 13.7, didn't you?
This is what you typically have on contemporary cars, whereas it used to be 14.3 V at times, when batteries lasted 7+ years. This is what I am aming at. Well, let's close the discussion, if there is no possibility to get rid of the fuel savings on any cost :-(

Regards
Karel
User avatar
GiveMeABreak
Forum Admin Team
Posts: 36996
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5644

Re: C5 X7 Diagbox- where to find the alternator?

Post by GiveMeABreak »

No, my X7 charges at between the 14.3 to 14.7 with engine idling.
Please Don't PM Me For Technical Help

Marc
marsalek
Posts: 144
Joined: 21 May 2003, 16:37
Location: Germany
My Cars: Xantia X2 HDi109
C5 X7 HDi240
x 14

Re: C5 X7 Diagbox- where to find the alternator?

Post by marsalek »

Oh, in that case I need to look into that...
Thanks a lot!
Karel
User avatar
GiveMeABreak
Forum Admin Team
Posts: 36996
Joined: 15 Sep 2015, 19:38
Location: West Wales
My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5644

Re: C5 X7 Diagbox- where to find the alternator?

Post by GiveMeABreak »

No worries - good luck with it. :) but do measure across the battery terminals so you can see what is actually going into the battery. Using the cigarette lighter or other location may not provide an accurate reading as the power is already going through other components before it gets there and we know that the 12V socket is BSI controlled too.
Please Don't PM Me For Technical Help

Marc
marsalek
Posts: 144
Joined: 21 May 2003, 16:37
Location: Germany
My Cars: Xantia X2 HDi109
C5 X7 HDi240
x 14

Re: C5 X7 Diagbox- where to find the alternator?

Post by marsalek »

Thanks for the tip!
Post Reply